If you receive suspicious item call 999 and ask for the police. Clear the area immediately. Do not attempt to open the letter or package. Avoid unnecessary handling. Keep it separate so it is easily identifiable.
How you must store precursor chemicals (including hydrogen peroxide or ammonium nitrate), toxins and radioactive materials on your premises.
This document outlines a set of options which can be used by the private sector and security industry to enhance the wider national security posture at times of raised threat or in response to a terrorist incident.